import threading
import time


def sing():
    while True:
        print("我在唱歌")
        time.sleep(1)


def dance(meg):
    while True:
        print("我在跳舞", meg)
        time.sleep(1)


sing_thread = threading.Thread(target=sing)
dance_thread = threading.Thread(target=dance, args=("跳的很好",))

sing_thread.start()
dance_thread.start()
